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Jonathan Caplan KC and Mark Brompton KC are distinguished King's Counsel operating from One Essex Court, a pre-eminent set of commercial barristers' chambers in London. They are highly regarded for their expertise in complex commercial litigation, arbitration, financial services, civil fraud, and regulatory law. Their 'chambers' in this context refers to their individual practices within the larger framework and support system of One Essex Court. They provide specialist advocacy and advisory services to a wide range of clients, both domestic and international.
The headquarters at One Essex Court serves as the central hub for administrative support, client meetings, legal research, and conferencing facilities for all member barristers, including Jonathan Caplan KC and Mark Brompton KC.
Located within the historic and prestigious legal precinct of Temple, known for its traditional architecture and close proximity to the Royal Courts of Justice. The buildings often combine period features with modern facilities.
The work culture at leading sets like One Essex Court is highly professional, intellectually rigorous, and demanding. There's a strong emphasis on excellence, meticulous preparation, and effective advocacy. While barristers are self-employed, there's a collegiate atmosphere for sharing knowledge and support.
One Essex Court is consistently ranked as one of the top commercial chambers in the UK and globally. Its location in Temple underscores its connection to the heart of the English legal system.
While primarily based in London, Jonathan Caplan KC, Mark Brompton KC, and other members of One Essex Court undertake work globally. They frequently appear in international arbitrations, advise on cross-border disputes, and work with clients and legal teams from various jurisdictions. Their expertise is sought in numerous common law and international commercial centers. The Singapore annexe further supports this global reach, particularly in Asia.
One Essex Court, Temple
London
England
United Kingdom
Address: Maxwell Chambers Suites, 28 Maxwell Road, #04-01, Singapore 069120
To provide a local presence for arbitration and dispute resolution services in Asia, facilitating easier access for clients and participation in the thriving Singaporean international arbitration hub.
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As of April 2025, One Essex Court (representing the chambers of J Caplan KC & M Brompton KC)' leadership includes:
One Essex Court (representing the chambers of J Caplan KC & M Brompton KC) has been backed by several prominent investors over the years, including:
Barristers' chambers like One Essex Court see movements with new tenants (barristers) joining or experienced members retiring or moving to the bench. Specific 'executive' hires/exits for individual KCs are rare unless they change chambers. Key news often relates to pupillage offers, new silks (KC appointments), or significant case involvement. No high-profile 'executive' changes directly involving J Caplan KC or M Brompton KC specifically have been publicly noted in the last 12 months beyond their ongoing successful practices.
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Emails to barristers at One Essex Court, including Jonathan Caplan KC and Mark Brompton KC, are typically directed through their clerks. The general clerks' email is a primary point of contact. Individual barristers often have an email format of [firstinitial][lastname]@oeclaw.co.uk or [initials]@oeclaw.co.uk.
[firstinitial][lastname]@oeclaw.co.uk or clerks@[domain]
Format
clerks@oeclaw.co.uk
Example
90%
Success rate
One Essex Court Website / Legal Directories (Chambers & Partners, Legal 500) • Ongoing
Jonathan Caplan KC maintains a distinguished practice at One Essex Court, frequently instructed in high-profile and complex cases. His expertise is widely acknowledged in legal rankings and by peers....more
One Essex Court Website / Legal Directories (Chambers & Partners, Legal 500) • Ongoing
Mark Brompton KC is a prominent barrister at One Essex Court, known for his strong advocacy and advisory work in significant commercial disputes. He is regularly featured in leading legal directories for his capabilities....more
One Essex Court News • February 20, 2024
While not specifying Caplan or Brompton, this news reflects the type of high-stakes litigation One Essex Court is involved in. Several members of One Essex Court acted for the successful respondent, Bank St Petersburg, in an appeal concerning the recognition and enforcement of Russian judgments....more
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